Any ideas on how to set/output something if the previous variant in a for loop has a parameter?

Question

Realizing Twig can't escape a for loop, how would one go about setting a variable for the current item and not the following?

Scenario; Color swatches are radio buttons, if default purchasable stock <= 0 and default purchasable unlimitedStock == false, the next radio button should be checked, and if this has stock <= 0 and so on, you get the idea, the next would be checked.

I can't seem to find a way to only check the next, and not all the following radio buttons if previous purchasable in the loop is out of stock.

A lot of checking of the checkers being checked here. Hah.

Answer 1

Here's a simple solution that might be viable for your scenario:

{% set selected = false %}
{% for purchasable in product.variants %}
    {% if selected == false and (purchasable.stock > 0 or purchasable.unlimitedStock) %}
        {# output selected radio #}
        {% set selected = true %}
    {% else %}
        {# output unselected radio #}
    {% endif %}
{% endfor %}

Essentially set a variable (selected in this case) that once set cannot be re-set, and is only set under the circumstances you mentioned (stock available or unlimitedStock set to true).

Answer 2

Check out the MN Twig Perversion plugin. It adds a break Twig tag, which allows you to escape from a loop once you have the data you need.